Die-press.



`R. E. KIDDER.

DIE PRESS.

APPLIOATION FILED 23.16. 1910` 967,526. Patented Aug. 16,1910.

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RICHARD E. `RIDDER, or WORCESTER,irassncnnsnrrs.

DIE-PRESS.

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Specification of Letters Patent.

Patented Aug. 1e, 1910.

Application filed April 16, 1910. Serial No. 555,907.

To all whom 'it may concern:

Be it known that I, R101-IARD E. KIDDER, a citizen of the `UnitedStates, residing at Worcester, in the county of Worcester andCommonwealth of Massachusetts, have invented a new and usefulImprovement in Die-Presses, of which the followingis a specification,accompanied by drawings forming a part of the same.

My present invention relates to that class of die presses in which areciprocating head is employed to force a cutting die through cloth,paper, or similar material, for the purpose of cutting the latter intoany desired shape, corresponding with the shape of the cutting die,such, for example, as cutting envelop blanks, in which operation a pileof paper is laid upon a supporting table, and the cutting die placedupon the pile and forced through the mass of paper by the downwardmovement of the reciprocating head.

The nature of my present invention is hereinafter described andillustrated in the accompanying drawings, the novel features beingpointed out in the annexed claims.

Referring to the accompanying drawings, Figure 1 represents aperspective view of a die press embodying my invention. Figs. 2 and 3are detached portions of the operating mechanism. Fig. 4 is a detachedside view of the supporting table showing the connection therewith ofthe spring actuated friction rolls.

Similar reference characters refer to similar parts in the differentfigures.

The die press embodying my invention comprises two side frames 1, 1,between which is supported a table 2 for supporting the work to be cut.Vertically movable in suitable ways in the side frames 1, 1, is areciprocating head 3 provided with bearings for a shaft 4. Attached tothe outer ends of the shaft 4 are yokes 5, 5, in the lower ends of whichare journaled connecting rods 6, one upon each side of the machine. Thelower ends of the connecting rods 6 are screw threaded, as shown at 7,and enter the screw threaded hubs 8 in the yokes 9 which are j ournaledupon crank pins 10 carried in the disks 11 on a main driving shaft 12.One of the connecting rods with the yokes 5 and 9 are shown in Fig. 1,the corresponding rod and yokes upon the opposite side of the machinewhich are not shown in F ig. 1 being duplicates. The shaft 12 has ageared connection with `a shaft 13 to which power is applied by anysuitable means, and upon which is preferably mounted a balance wheel 14.60

As the shaft 12 rotates a vertically reciprocating motion will beimparted to the head 3. The connecting rods 6, 6, above their upperjournal bearings are provided with bevel gears 15 which are engaged bybeveled pinions 16 on ya shaft 17 parallel with the shaft 4. The shaft17 is provided with a bevel gear 1S in mesh with a bevel gear 19 carriedupon the lower end of a` short shaft 20, the upper end of which isprovided with a hand wheel 21 having a crank handle 22 to enable theoperator to rotate the shaft 17 at will. The two shafts 4 and 17 areconnected by a yoke 23, and the shaft is journaled in a frame` 24 fromwhich extends a plate 25 curved concentrically withthe shaft 17 andhaving a slot 26, through which a screw 27 extends into the yoke 23 forthe purpose of rigidly clamping the plate 25 to the yoke 23 in anydesired position, so as to allow an adjustment of the hand wheel 21 atan angle convenient for the operator.

By rotating the hand wheel 21 the shaft 17 will be rotated through thegears 18 and 19 and through the gears 16 and 15 the connecting rods 6will be rotated within their screw threaded engagements with the hubs 8.If the rods 6 are turned in the proper direction to screw them .into thehubs 8 the distance between the shafts 12 and 4 will be reduced and thereciprocating head 3 correspondingly lowered. If the connecting rods 6,are rotated in the opposite direction, viz., to screw them out of thehubs 8, the distance between the shafts 12 and 4 will be correspondinglyincreased, thereby raising the reciprocating head 3.

The shaft 17 is made in two sections carrying disks 28, 29, which areconnected by bolts 30, said bolts passing through concentric slots 31 inone of the disks to allow a slight rotative adjustment between the twosections of the shaft 17, in order to enable the gears 16, 16, to bebrought into proper mesh with the gears 15, 15. The table 2 is providedon the front and rear sides with projecting arms 32, 33, the arms 32forming a support for the friction rolls 34, and the arms 33 forming asimilar support for the 110 friction rolls 35, all of said rolls bein`carried on shafts 36 which are journaled in the upper ends of studs 37passing through holes in the arms 32 and 33, and being held in a raisedposition by means of spiral sprinfrs 38 which hold the friction rollswith their peripheries extending in a plane slightly above the uppersurface 39 of the table 2. The material to be cut is supported upon aboard 4() which extends across the table 2 and supported at its oppositeedges upon the rolls 34C and upon the rolls 35 nearest the table. As thehead 3 descends to carry the cutting'die through the material to be cutthe board 40 is depressed, forcing the friction rolls beneath itdownward and compressing their lifting springs 38. Then the pressure ofthe die is removed the tension of the springs 38 tends to lift the board40 from the table 2, and thereby reduce the friction between the board40 and the upper surface of the table 2 when the former is beingremoved.

I claim,

l. In a die press, the combination with a vertically reciprocating head,and a work supporting table, of means for varying the position of saidhead relatively to said work supporting table, comprising a rotatableshaft, a short shaft having a geared connectionl with said rotatableshaft, a hand wheel carried by said short shaft, a frame supporting saidshort shaft, and means for adjustably holding said frame in a desiredposit-ion.

2. In a die press, a vertically reciprocating head, a pair of actuatingcranks there- @casse said frame havino a geared connection with saidhorizontal shaft and provided at one end with a hand wheel, and meansfor adjusting said frame about the axis of said horizontal shaft.

3. In a die press, a vertically reciprocating head, means for adjustingthe position of said head vertically, comprising a short shaft providedat one end with a hand wheel, a supporting frame for said shaft, andmeans for adjusting the frame to vary the vertical elevation of saidhand wheel.

4. In a die press, a vertically reciprocating head, a pair of cranks foractuating said head, screw threaded links between said head and saidcranks, means for imparting a 1.otative movement to said linkscomprlsing a shaft having a geared connection with each of said links, abeveled pinion attached to said shaft, a frame capable of a swingingmovement about the axis of said pinion, a shaft journaled in said frameand provided with a gear at one end in mesh with the pinion on saidhorizontal shaft, and a hand wheel at the opposite end, and means foradjusting the position of said frame.

RICHARD E. KIDDER.

Witnesses:

PENELOPE COMBERBAOH, NELLIE VHALEN.

